Q: What are the prime factors of the number 77,644?

 A: 2, 7, 47, 59

Why are those the prime factors of the number 77,644?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 77,644

77,644
Factor Arrows
238,822
Factor Arrows
219,411
Factor Arrows
72,773
Factor Arrows
4759

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 47, 59

We can check our work by multiplying all of the prime factors together: 2 x 2 x 7 x 47 x 59 = 77,644

This can also be written as 22 x 71 x 471 x 591 = 77,644

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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